.lb-fallback {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.9);
  z-index: 999999;
}

.lb-fallback.is-open {
  display: flex;
}

.lb-fallback__img {
  max-width: 94vw;
  max-height: 88vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.lb-fallback__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}

.lb-fallback__btn:hover {
  background: rgba(255, 255, 255, 0.32);
}

.lb-fallback__btn--prev { left: 18px; }
.lb-fallback__btn--next { right: 18px; }

.lb-fallback__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.lb-fallback__close:hover {
  background: rgba(255, 255, 255, 0.32);
}